The bolts are probably easy to get at if the seat could move out of the way. Are you sure it is the seat and not the switch? I have an 87' 300e with 365000km on it and the passenger seat stopped working and it was the switch.

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Chris Muc

'08 R320CDI 265,000km
'15 GL350 206,000km

"You can fight without ever winning
But never ever win without a fight"

Neil Peart